Wafer butterfly valve is one of the commonly used butterfly valves, which is named because of its structural form that the stem axis, butterfly plate center and body center are in the same position. The structure of the wafer butterfly valve is very simple, and the installation and maintenance are also very convenient. As a component to control the on-off and flow of pipeline system, wafer butterfly valve is widely used in pipeline systems in petroleum, chemical industry, hydropower station, municipal construction, water supply and drainage and other fields.
Advantages of wafer butterfly valve
Wafer butterfly valve is a commonly used industrial valve with many advantages. One of the advantages of wafer butterfly valve is its simple structure, small volume and light weight.
The second advantage is convenient operation and quick switching.
The third advantage is low fluid resistance.
In addition, the wafer butterfly valve also has good sealing performance.
The working principle of butterfly valve is very simple. It controls the flow and direction of fluid through the rotation of valve disc. When the valve disc is closed, a closed space is formed between the valve disc and the valve seat to avoid fluid leakage. When the valve disc rotates to the open state, the gap between the valve disc and the valve seat gradually expands, so that the fluid flows through the butterfly valve.
Butterfly valve control methods are divided into manual and automatic. The manual control method is usually to rotate the valve disc through the manual wheel and other devices to control the fluid.
Automatic drive can be divided into pneumatic and electric. Pneumatic butterfly valve is a pneumatic valve that uses a circular butterfly plate that rotates with the valve stem to open and close, so as to realize the activation action. It is mainly used as a block valve, and can also be designed to have the function of adjustment or valve break and adjustment. Butterfly valves are used more and more in low-pressure large and medium-diameter pipelines. The electric butterfly valve is composed of an electric actuator and a butterfly valve. There are two control modes: switch and adjustment. The electric actuator rotates to drive the butterfly valve to open and close. At the same time, the electric butterfly valve also has the function of manual operation, which is convenient to open and close the butterfly valve by manual operation when power failure occurs.
Wafer butterfly valves are an essential component in many different types of piping systems. They provide efficient and reliable performance while also being relatively easy to install and operate. Understanding the basics of how they work and the features they possess will help you choose the right wafer butterfly valve for your application. Additionally, it is important to follow proper maintenance practices to ensure that your valve offers maximum performance and reliability. With regular inspections and proper operation techniques, you can get the most out of your wafer type butterfly valve for a long time to come.
Material of Wafer Butterfly Valve
| Part |
Materials |
| Body |
Ductile Iron |
| Seat |
EPDM / BUNA / VITON / PTFE |
| Disc |
Ductile Iron / 316 Stainless Steal / Bronze |
| Seat |
BUNA / EPDM / PTFE |
| Bushing |
PTFE |
| O-Ring |
EPDM / BUNA |
| Taper Pin |
316 Stainless Steel |
| Stem |
416 Stainless Steel |
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